Avoid Corrosion In Liftgate Electrical Systems
Trucks and trailers outfitted with liftgates typically have critical delivery and pickup schedules, so it’s important that the electrical connections and cable are dependable, keeping the liftgate working throughout the vehicle’s daily route.
The liftgate power cord and electrical connections are the gateway for power to travel from the tractor to the trailer to charge the liftgate batteries. Just like the seven-way connection, corrosion buildup is also an issue for liftgate electricals, especially in some geographic areas more than others. If corrosion enters the electrical system via this union, there may not be enough power to charge the batteries to cycle the liftgate. It can slow down or completely block the charge to the liftgate batteries, causing delayed deliveries and downtime for repairs.
A few tips to keep corrosion buildup at bay:
The liftgate plug and socket interface should be cleaned at every preventive maintenance interval, or more often if the vehicle is exposed to sodium (salt), magnesium or calcium chlorides in cold weather areas.
Also, inspect the liftgate cable for damage. Replace if cracks or deep nicks in the jacketing are found that would allow for corrosion-causing moisture and contaminants to enter and “wick” their way into the electrical charging system.
Sockets should always be mounted in a vertical position, flush with the back of the tractor. Sockets that are angled with their openings pointed up will not drain properly and will catch and trap moisture and contaminants. This creates a breeding ground for corrosion inside the socket, which can travel into the liftgate charging system.
